# Petropolis vs K9 Nanni

The clearest difference is update cadence: K9 Nanni at every 6 weeks against Petropolis's every 22 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Petropolis ships an update every 22 months, K9 Nanni every 6 weeks. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Petropolis | K9 Nanni |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/petropolis/id6476578728/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 38 MB | 55 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Michael Schifano](https://appshunter.io/developer/1727237599) | [LINDA SOLANA](https://appshunter.io/developer/6781429211) |

## What reviewers say

### Petropolis

[App page](https://appshunter.io/ios/app/petropolis/id6476578728)

This app provides comprehensive pet care services, focusing on enriching experiences and educating pet parents. It utilizes cutting-edge, research-based methods to empower the human-animal bond.

**Highlights:** All-inclusive pet services, Force-free philosophy, Cutting-edge, research-based methods, Enriching pet experiences, Educating pet parents, Empowering human-animal bond

**Features:** macOS Compatibility

**In-app purchases:** none


### K9 Nanni

[App page](https://appshunter.io/ios/app/k9-nanni/id6781429209)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Petropolis free?

Petropolis is free to download, with no in-app purchases.

### Is K9 Nanni free?

K9 Nanni is free to download, with no in-app purchases.

### Do Petropolis or K9 Nanni have ads?

Neither Petropolis nor K9 Nanni shows ads.

### Which is updated more often, Petropolis or K9 Nanni?

Petropolis ships an update every 22 months, and K9 Nanni every 6 weeks. Most recently, Petropolis was updated on October 7, 2026 and K9 Nanni on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*